Big brands have greater strength—how can consumers identify and choose brake pads?

　　As ordinary consumers, it’s hard to tell the difference on our own by simply looking or asking, because today’s aftermarket is rife with counterfeit and substandard products, each vendor touting its own merits. Even items purchased at a 4S dealership at a premium may turn out to be high‑quality knockoffs. Therefore, the best approach is to educate yourself about brake pads and carefully analyze your options, thereby minimizing the risk of being misled.

　　Brake pads, as critical safety components of a vehicle, are subject to a stringent licensing and approval regime in China. However, much like food products, the existence of such regulations does not guarantee that all market offerings are of high quality; imitation, counterfeiting, and the sale of fake goods persist across various industries. Nevertheless, precisely because brake pads are safety‑critical parts, automakers exercise extreme caution when selecting original‑equipment components, applying standards far stricter than those mandated by national regulations. Therefore, as an ordinary consumer, you can’t go wrong by simply following the automaker’s recommendations. When choosing brake pads, automakers typically require that the products meet certain technical specifications:

　　1. Coefficient of Friction: Simply put, the coefficient of friction reflects a brake’s stopping performance, and its stability is a key indicator for brake pads. What does “stability” mean? During driving, vehicles encounter a wide range of road conditions—icy surfaces, wet roads, long downhill stretches, winding mountain routes with repeated ascents and descents, emergency braking, and more. Under these circumstances—cold, wet, high‑temperature, alternating hot‑and‑cold, and extreme heat—the ability of the brake pad to maintain a stable coefficient of friction is critically important.

　　2. Service Life: Maximize service life to reduce the frequency of replacements.

　　3. Noise: Whether it’s emergency braking or normal deceleration, light braking or repeated braking, there should be no harsh, grating noise.

　　4. Comfort: What does it mean to be comfortable? It’s when, while driving, you decide where you want the car to stop and, relying on your own feel, press the brake—only for the car to come to a smooth halt exactly where you intended, without any noise or vibration. That’s the kind of fluidity I’m talking about. In my view, comfort should feel like this—almost as if you’re in complete control. Achieving this sensation through the brake formulation is no easy task: too high a braking coefficient won’t do, nor will too low; if the friction coefficient is too high, the braking power is strong, but the car may lunge forward, vibrate, and produce noise. If it’s too low, the situation becomes even more dangerous—you might think you’ve stopped, only to find you haven’t.

　　5. Thermal Expansion: Both continuous braking and emergency braking generate high temperatures. According to the principle of thermal expansion and contraction, brake pads also expand. However, regulations require that this expansion remain within a very narrow range; excessive expansion can reduce the clearance between the pad and the rotor, causing the pad and rotor to remain in contact during normal driving. This ultimately leads to elevated oil temperatures in the brake caliper, resulting in oil leakage and brake failure.

　　6. Thermal Fade: Brake pads are required to maintain a consistent coefficient of friction across a wide range of temperatures—whether hot, cold, or under varying conditions—and the materials must be capable of operating over an extensive temperature spectrum, ensuring that braking performance remains stable under all circumstances.

　　7. Compressibility: This refers to the fact that, when braking with a given braking force, the brake pads should neither be too soft nor too hard. If they are too soft, it can compromise the pad’s response time; if they are too hard, they can damage the rotor and generate noise. According to the relevant standards, the compressibility should fall within the range of 0.1 to 0.2 mm.

　　8. No damage to the rotor: The social cost of brake pads is far lower than that of brake rotors. In Western developed countries like Europe and the United States, highly polluting industries such as casting are strictly prohibited. Yet China accounts for 70% of global brake rotor production—something we still seem proud of. Therefore, in this trade-off, it is the brake pad that should wear down, not the rotor. On mid- to high‑end Japanese vehicles, ceramic brake pads have a key advantage: they do not harm the rotor, wearing only themselves. As a result, in the aftermarket, few people sell rotors for Japanese models like Toyota, because these rotors experience virtually no wear. To ensure long service life while minimizing wear on the rotor requires advanced technology and higher‑grade materials—this is precisely why ceramic products command a premium. Today, many brake pads on the market contain copious amounts of abrasion‑enhancing additives to extend their lifespan, but this approach fails to address rotor wear or noise, reflecting an immature formulation and manufacturing process.

　　9. Environmental Protection: Today, it is widely recognized that European and American countries prohibit the use of asbestos; even the inclusion of trace amounts of asbestos‑containing materials, such as sepiolite, in formulations can result in product returns and fines. Meanwhile, many heavy‑duty vehicle models in China still rely on asbestos‑based friction materials. In the United States, there are now proposals to gradually ban copper from automotive components. Such legislative measures will likewise drive advancements in the friction materials industry, leading to the gradual elimination of manufacturers lacking R&D capabilities.

　　After reading all this, you might be feeling a bit frustrated—so much hassle! Indeed, it is cumbersome, but the most challenging part is fine-tuning the formulation. To meet the requirements outlined above as closely as possible, you have to select a few or a dozen ingredients from hundreds of options and then painstakingly optimize them. And even that optimization relies heavily on practical experience. Beyond that, finding a truly effective formulation often requires tens of thousands—even hundreds of thousands—of bench‑test cycles, in which samples are subjected to simulated braking conditions on test rigs. Just thinking about it is daunting: which materials to use, in what quantities—every decision must be backed by extensive experimental data. If someone claims they can whip up a winning formula for you, they’re almost certainly exaggerating. Moreover, formulations are far from set in stone; with the emergence of new materials, you must first determine whether they can be incorporated and assess their performance, again demanding countless experiments. That’s why most manufacturers lack both the resources and the time to develop proprietary formulations. So, can you really expect such companies to produce high‑quality brake pads?

　　We sincerely pay tribute to the technical personnel who are working tirelessly on research and development—thank you for your hard work!

　　Even after meeting these performance requirements, you still cannot gain access to automotive‑manufacturer supply chains. Automakers rigorously apply a systematic assessment to determine whether your production process is under control—specifically, whether nonconforming parts could arise during manufacturing and whether such defects can be safely identified and removed. If there’s even the slightest possibility of such issues, you will not be approved as a supplier. That’s not all: they also evaluate your suppliers to ensure they have the capability to deliver reliably. Only when both your processes and your suppliers meet these standards can your products qualify for original‑equipment installation. Following this stringent evaluation, products that satisfy both performance criteria and process‑control requirements are invariably high‑quality—these are the genuine components used in vehicles from the factory.

　　For the original‑equipment manufacturers, automakers typically enter into exclusive supply agreements, ensuring that their products are sold only through the automaker and not directly on the open market. All parts supplied to 4S dealerships come directly from the automaker’s own parts‑supply subsidiaries, effectively monopolizing this segment of the market. As a result, consumers are forced to pay premium prices when purchasing from 4S dealerships. However, savvy consumers have likely already realized—based on what they’ve learned about brake pads—that as long as the product uses the same formulation and adheres to the same process controls, its quality will match that of the original equipment. By following this principle, we can secure OEM‑quality products at significantly lower prices.

　　Huangshi Saite Friction Materials Co., Ltd. is committed to developing high‑quality, environmentally friendly, asbestos‑free friction pads. Through continuous innovation, the company has obtained certifications from numerous international testing laboratories, including those of LINK and GREEN in the United States, TÜV in Germany, ISO/TS 16949 in Singapore, and ISO 9001 from Bureau Veritas Quality International (BVQI).

 

 

 

(Note: The certificates are GREEN, LINK, and ISO/TS 16949 from the United States, respectively.)